Coding and Decoding Questions

If SELFIE = LXEYBX, then PHYSICS = ____

In a certain code CAMEL is written as MFNBD. How shall TIGER be written in that code?

If 10$25 = 8, 12$25 = 10 then what is the value of 14$53 = ?

If 8*2 = 3, 14*18 = -2 and 18*2 = 8, then find the value of 14*10 = ?

If 9@3=12; 15@4=22; 16@14=4; then what is the value of 6@2=?

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?

56 ÷ 8 + 12 - 72 = ?

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?
550 x 22 - 24 + 3 = ?

In a certain language, if PLATE is written as CYNGR, then SHOCK will be written as